mirror of
https://github.com/Mibew/handlebars.php.git
synced 2025-05-03 10:33:08 +03:00
519 lines
11 KiB
PHP
Executable File
519 lines
11 KiB
PHP
Executable File
<?php
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/**
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* This file is part of Handlebars-php
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* Based on mustache-php https://github.com/bobthecow/mustache.php
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*
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* PHP version 5.3
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*
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* @category Xamin
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* @package Handlebars
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* @author fzerorubigd <fzerorubigd@gmail.com>
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* @author Behrooz Shabani <everplays@gmail.com>
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* @copyright 2012 (c) ParsPooyesh Co
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* @copyright 2013 (c) Behrooz Shabani
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* @license MIT <http://opensource.org/licenses/MIT>
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* @version GIT: $Id$
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* @link http://xamin.ir
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*/
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namespace Handlebars;
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use Handlebars\Loader\StringLoader;
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use Handlebars\Cache\Dummy;
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/**
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* Handlebars template engine, based on mustache.
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*
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* @category Xamin
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* @package Handlebars
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* @author fzerorubigd <fzerorubigd@gmail.com>
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* @copyright 2012 (c) ParsPooyesh Co
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* @license MIT <http://opensource.org/licenses/MIT>
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* @version Release: @package_version@
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* @link http://xamin.ir
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*/
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class Handlebars
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{
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private static $_instance = false;
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const VERSION = '1.0.0';
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/**
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* factory method
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*
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* @param array $options see __construct's options parameter
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*
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* @return void
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*/
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public static function factory ($options=array())
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{
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if (self::$_instance === false) {
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self::$_instance = new Handlebars($options);
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}
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return self::$_instance;
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}
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/**
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* @var Tokenizer
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*/
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private $_tokenizer;
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/**
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* @var Parser
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*/
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private $_parser;
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/**
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* @var Helpers
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*/
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private $_helpers;
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/**
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* @var Loader
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*/
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private $_loader;
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/**
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* @var Loader
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*/
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private $_partialsLoader;
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/**
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* @var Cache
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*/
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private $_cache;
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/**
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* @var callable escape function to use
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*/
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private $_escape = 'htmlspecialchars';
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/**
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* @var array parametes to pass to escape function
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*/
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private $_escapeArgs = array (
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ENT_COMPAT,
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'UTF-8'
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);
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private $_aliases = array();
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/**
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* Handlebars engine constructor
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* $options array can contain :
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* helpers => Helpers object
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* escape => a callable function to escape values
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* escapeArgs => array to pass as extra parameter to escape function
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* loader => Loader object
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* partials_loader => Loader object
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* cache => Cache object
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*
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* @param array $options array of options to set
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*/
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public function __construct(array $options = array())
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{
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if (isset($options['helpers'])) {
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$this->setHelpers($options['helpers']);
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}
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if (isset($options['loader'])) {
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$this->setLoader($options['loader']);
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}
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if (isset($options['partials_loader'])) {
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$this->setPartialsLoader($options['partials_loader']);
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}
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if (isset($options['cache'])) {
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$this->setCache($options['cache']);
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}
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if (isset($options['escape'])) {
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if (!is_callable($options['escape'])) {
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throw new \InvalidArgumentException(
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'Handlebars Constructor "escape" option must be callable'
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);
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}
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$this->_escape = $options['escape'];
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}
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if (isset($options['escapeArgs'])) {
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if (!is_array($options['escapeArgs'])) {
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$options['escapeArgs'] = array($options['escapeArgs']);
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}
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$this->_escapeArgs = $options['escapeArgs'];
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}
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if (isset($options['partials_alias'])
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&& is_array($options['partials_alias'])
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) {
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$this->_aliases = $options['partials_alias'];
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}
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}
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/**
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* Shortcut 'render' invocation.
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*
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* Equivalent to calling `$handlebars->loadTemplate($template)->render($data);`
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*
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* @param string $template template name
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* @param mixed $data data to use as context
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*
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* @return string Rendered template
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* @see Handlebars::loadTemplate
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* @see Template::render
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*/
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public function render($template, $data)
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{
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return $this->loadTemplate($template)->render($data);
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}
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/**
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* Set helpers for current enfine
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*
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* @param Helpers $helpers handlebars helper
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*
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* @return void
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*/
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public function setHelpers(Helpers $helpers)
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{
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$this->_helpers = $helpers;
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}
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/**
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* Get helpers, or create new one if ther is no helper
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*
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* @return Helpers
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*/
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public function getHelpers()
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{
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if (!isset($this->_helpers)) {
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$this->_helpers = new Helpers();
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}
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return $this->_helpers;
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}
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/**
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* Add a new helper.
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*
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* @param string $name helper name
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* @param mixed $helper helper callable
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*
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* @return void
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*/
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public function addHelper($name, $helper)
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{
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$this->getHelpers()->add($name, $helper);
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}
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/**
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* Get a helper by name.
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*
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* @param string $name helper name
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*
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* @return callable Helper
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*/
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public function getHelper($name)
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{
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return $this->getHelpers()->get($name);
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}
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/**
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* Check whether this instance has a helper.
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*
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* @param string $name helper name
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*
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* @return boolean True if the helper is present
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*/
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public function hasHelper($name)
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{
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return $this->getHelpers()->has($name);
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}
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/**
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* Remove a helper by name.
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*
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* @param string $name helper name
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*
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* @return void
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*/
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public function removeHelper($name)
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{
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$this->getHelpers()->remove($name);
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}
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/**
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* Set current loader
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*
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* @param Loader $loader handlebars loader
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*
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* @return void
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*/
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public function setLoader(Loader $loader)
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{
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$this->_loader = $loader;
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}
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/**
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* get current loader
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*
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* @return Loader
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*/
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public function getLoader()
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{
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if (!isset($this->_loader)) {
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$this->_loader = new StringLoader();
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}
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return $this->_loader;
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}
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/**
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* Set current partials loader
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*
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* @param Loader $loader handlebars loader
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*
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* @return void
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*/
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public function setPartialsLoader(Loader $loader)
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{
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$this->_partialsLoader = $loader;
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}
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/**
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* get current partials loader
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*
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* @return Loader
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*/
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public function getPartialsLoader()
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{
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if (!isset($this->_partialsLoader)) {
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$this->_partialsLoader = new StringLoader();
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}
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return $this->_partialsLoader;
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}
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/**
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* Set cache for current engine
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*
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* @param Cache $cache handlebars cache
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*
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* @return void
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*/
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public function setCache(Cache $cache)
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{
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$this->_cache = $cache;
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}
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/**
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* Get cache
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*
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* @return Cache
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*/
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public function getCache()
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{
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if (!isset($this->_cache)) {
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$this->_cache = new Dummy();
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}
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return $this->_cache;
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}
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/**
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* Get current escape function
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*
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* @return callable
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*/
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public function getEscape()
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{
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return $this->_escape;
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}
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/**
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* Set current escpae function
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*
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* @param callable $escape function
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*
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* @return void
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*/
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public function setEscape($escape)
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{
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if (!is_callable($escape)) {
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throw new \InvalidArgumentException(
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'Escape function must be a callable'
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);
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}
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$this->_escape = $escape;
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}
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/**
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* Get current escape function
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*
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* @return callable
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*/
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public function getEscapeArgs()
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{
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return $this->_escapeArgs;
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}
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/**
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* Set current escpae function
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*
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* @param array $escapeArgs arguments to pass as extra arg to function
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*
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* @return void
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*/
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public function setEscapeArgs($escapeArgs)
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{
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if (!is_array($escapeArgs)) {
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$escapeArgs = array($escapeArgs);
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}
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$this->_escapeArgs = $escapeArgs;
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}
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/**
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* Set the Handlebars Tokenizer instance.
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*
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* @param Tokenizer $tokenizer tokenizer
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*
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* @return void
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*/
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public function setTokenizer(Tokenizer $tokenizer)
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{
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$this->_tokenizer = $tokenizer;
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}
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/**
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* Get the current Handlebars Tokenizer instance.
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*
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* If no Tokenizer instance has been explicitly specified, this method will
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* instantiate and return a new one.
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*
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* @return Tokenizer
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*/
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public function getTokenizer()
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{
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if (!isset($this->_tokenizer)) {
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$this->_tokenizer = new Tokenizer();
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}
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return $this->_tokenizer;
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}
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/**
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* Set the Handlebars Parser instance.
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*
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* @param Parser $parser parser object
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*
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* @return void
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*/
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public function setParser(Parser $parser)
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{
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$this->_parser = $parser;
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}
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/**
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* Get the current Handlebars Parser instance.
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*
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* If no Parser instance has been explicitly specified, this method will
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* instantiate and return a new one.
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*
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* @return Parser
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*/
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public function getParser()
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{
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if (!isset($this->_parser)) {
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$this->_parser = new Parser();
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}
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return $this->_parser;
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}
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/**
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* Load a template by name with current template loader
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*
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* @param string $name template name
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*
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* @return Template
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*/
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public function loadTemplate($name)
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{
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$source = $this->getLoader()->load($name);
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$tree = $this->_tokenize($source);
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return new Template($this, $tree, $source);
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}
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/**
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* Load a partial by name with current partial loader
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*
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* @param string $name partial name
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*
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* @return Template
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*/
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public function loadPartial($name)
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{
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if (isset($this->_aliases[$name])) {
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$name = $this->_aliases[$name];
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}
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$source = $this->getPartialsLoader()->load($name);
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$tree = $this->_tokenize($source);
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return new Template($this, $tree, $source);
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}
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/**
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* Register partial alias
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*
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* @param string $alias Partial alias
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* @param string $content The real value
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*
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* @return void
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*/
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public function registerPartial($alias, $content)
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{
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$this->_aliases[$alias] = $content;
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}
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/**
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* Un-register partial alias
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*
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* @param string $alias Partial alias
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*
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* @return void
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*/
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public function unRegisterPartial($alias)
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{
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if (isset($this->_aliases[$alias])) {
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unset($this->_aliases[$alias]);
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}
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}
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/**
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* Load string into a template object
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*
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* @param string $source string to load
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*
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* @return Template
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*/
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public function loadString($source)
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{
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$tree = $this->_tokenize($source);
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return new Template($this, $tree, $source);
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}
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/**
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* try to tokenize source, or get them from cache if available
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*
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* @param string $source handlebars source code
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*
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* @return array handlebars parsed data into array
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*/
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private function _tokenize($source)
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{
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$hash = md5(sprintf('version: %s, data : %s', self::VERSION, $source));
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$tree = $this->getCache()->get($hash);
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if ($tree === false) {
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$tokens = $this->getTokenizer()->scan($source);
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$tree = $this->getParser()->parse($tokens);
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$this->getCache()->set($hash, $tree);
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}
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return $tree;
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}
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} |